Projectile for ordnance.



H. STANBRIDGE.

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HENRY STANBRIDGE, OF TINSLEY, NEAR SHEFFIELD, ENGLAND, ASSIGNOR TOJOSEPH ALBERT HILL, OF SHEFFIELD, ENGLAND.

PROJECTILE FOR ORDNANCE.

Specification of Letters Patent.

Patented June 11, 1912.

Application led February 25, 19.11. Serial No. 610,821.

To all whom tt may concern:

Be it known that I, HENRY STANBRIDGE, subject of the King of GreatBritain and Ireland, residing at 39 Rotherham road, Tinsley, neal`ShefHeld, England, engineer, have invented certain new and usefulImprovements in and Relating to Projectiles for Ordnance, for which Ihave applied for Letters Patent in Great Britain, No. 4,253, February21, 1910, of which the following is a specication, reference being hadto the accompanying drawings.

My invention has reference to the class of projectiles as described inBritish specifications No. 16707 of 1904 and No. 3033 of 1905 and hasfor object to improve the flight and also the interior of suchprojectiles. The hollowing of the head and consequent displacement ofmetal necessitates a long radius for the ogive that forms thecontinuation of the parallel walls of such projectiles; as a consequencethey compare unfavorably as regards steadiness of Hight with shellshaving a shorter radius for the ogive and a flat base. I thereforereduce in length and slope the parallel walls toward the base and whileretaining a flat base considerably diminish the area thereof. Thedriving band is in consequence put much farther forward, the proportionof slope at rear, parallel and forward slope depending on the length ofshell, this in turn depending on the capacity. This design allows theair to close in behind the projectile when in flight an advantage overprojectiles with bases at right angles to the walls, and also assists tosteady it; further, the weight of base is reduced., The base plug markedB, in accompanying drawing has in consequence to be modified, the blockwhich is inserted being shaped as follows: It has a central hole (3)with fuse threads and lips inward (b2) and outward (b1) or only outwardand at an angle to conform to the curvature or slope (a2) of the base ofthe shell, also a projecting ange (b4) to stop it from being pushed inthe shell on firing.

The walls of the shell may be reduced at the base, so that the closingin, similar to that described in No. 3033 of 1905, may be facilitatedand even done cold and shaped as described in specification No. 5363 of1831, Figure 2. Further to prevent the heat on penetration fromignitingY the bursting charge, also to economize space, I combine with anon-conducting liner such as asbestos marked C, in accompanying drawingand shaped to lit the interior of the shell, a non-corrosive metal linerD, to keep the liner C, rmly against the walls. This metal liner D,serves also to prevent the powder being ignited prematurely should alive shell break up in store. In the case of screw base shell, the saidcombined liners are easily inserted; in the case of shells with solidbases I claim to put the same in before closing down the walls of theshell.

My invention is illustrated by the annexed drawings in which Fig. 1,shows a section of the shell as above, .with inserted base. Fig. 2,shows a section of a shell with the walls closed in on the interiorlining.

Like letters and figures indicate similar parts.

A, is the shell body. al the concaved head. a2 the slope of the base. B,the base plug. b1 the outward obturating lips. b2 the inward obturatingli as. b3 the fuse hole and threads. b4 the ange to stop the base beingpushed into the shell on firing. C, the liner of non-conductingmaterial. D, the non-corrosive metal liner, forming the powder chamber.

Having now particularly described my said invention, and in what mannerthe same is to be performed, I declare that what I claim, is

1. A projectile for ordnance comprising a hollow shell having incombination a concave head, a tapering front portion having a longradius of ogive and an inwardly sloping base portion.

2. A project-ile for ordnance comprising a hollow shell having incombination a. concave head, a. tapering front portion having a longradius of ogive and an inwardly sloping base portion, a non-corrosivemetal liner forming a chamber for the charge and a liner ofnon-conducting material held in place by said metal liner.

'3. A projectile for ordnance comprising a hollow 'shell having incombination a concave head, a tapering front portion having a longradius of ogive and an inwardly sloping base portion, an open-ended non-Corroslve metal liner forming a chamber for the charge and an open-endedliner of noneonclucting material held in place by said metal liner, theWalls of the shell and the liners being subsequently closed. in towardone another.

In Witness whereof I have hereunto set my hand in presence of twoWitnesses.

HENRY STANBRIDGE.

Witnesses:

JOSEPH ALBERT HILL7 ENsoR D. DRURY.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents, Washington, D. C.

